Completed

Prebiotic Microbiome Modulator for Reduced GI Side Effects of Metformin in Youth with Type 2 Diabetes

0 criteria met from your profileSee at a glance how your profile meets each eligibility criteria.
Study Aim

This phase 2 study aims to evaluate how well a prebiotic microbiome modulator reduces gastrointestinal side effects, such as stool consistency, urgency to evacuate, bloating, and flatulence, in young individuals with Type 2 diabetes who are taking Metformin.

What is being tested

Biomebliss

+ Metformin

+ Placebo

Dietary SupplementDrug
Who is being recruted

Diabetes Mellitus+3

+ Diabetes Mellitus, Type 2

+ Endocrine System Diseases

From 10 to 25 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 2
Interventional
Study Start: March 2020
See protocol details

Summary

Principal SponsorNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: March 10, 2020

Actual date on which the first participant was enrolled.

This study focuses on Type 2 Diabetes in youth and young adults, specifically looking at how Metformin, a common anti-diabetes medication, impacts them. Metformin, while effective, often causes gastrointestinal (GI) symptoms such as bloating, discomfort, and diarrhea. The study aims to find ways to reduce these side effects, as there are limited alternative treatments for youth with Type 2 Diabetes. The research suggests that changes in the gut or the microbiome due to Metformin may be linked to both its benefits and adverse effects. The study will explore if prebiotic fibers, non-digestible food ingredients that promote beneficial bacteria and stool metabolites, can improve Metformin tolerability and alter the stool metabolite profile in youth with Type 2 Diabetes. The 9-week study is divided into two phases. Phase 1 is a 5-week randomized double-blind cross-over trial where participants will receive either Metformin with a prebiotic or Metformin with a placebo, while following a standardized diet. Phase 2 is an open-label 4-week intervention where all participants will receive Metformin and the prebiotic. The study's primary outcome is to measure a composite GI tolerability score based on four categories: stool consistency, urgency to evacuate, bloating sensation, and flatulence. This score will be calculated using a principal components analysis, with a higher score indicating lower side effects.

Official TitlePrebiotics and Metformin Influences Gut and Hormones in Type 2 Diabetes Youth (MIGHTY)
NCT04209075
Principal SponsorNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

6 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 10 to 25 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Diabetes MellitusDiabetes Mellitus, Type 2Endocrine System DiseasesMetabolic DiseasesNutritional and Metabolic DiseasesGlucose Metabolism Disorders

Criteria

* INCLUSION CRITERIA: 1. Age 10-25 years 2. Pubertal or post-pubertal: Girls - Tanner stage IV-V breast; Boys - Testicular volume \>10cc 3. Diagnosis of type 2 diabetes by American Diabetes Association (ADA) guidelines \[36\] or with established diagnosis previously treated with metformin. 4. Negative test for diabetes-related autoantibodies (glutamic acid decarboxylase 65 and tyrosine phosphatase-related islet antigen 2 (IA-2)) documented in NIH CRIS chart or via outside laboratory assessment within the last 10 years. 5. Hemoglobin A1C \<8% at study initiation EXCLUSION CRITERIA: 1. Pregnancy or breastfeeding 2. Allergy to study medications 3. Allergy or self-reported intolerance to blueberry, pomegranate, or oats, soy, gluten or dairy products. 4. Chronic insulin therapy or insulin use within the last 3 months 5. Treatment with other medications which are known to affect the parameters under study, including antibiotics within the last month, immunosuppressants, proton-pump inhibitors, supraphysiologic systemic steroids, probiotic or prebiotic supplements 6. Heavy yogurt consumption (2 or more servings of \>=6 oz per day) 7. Chronic GI disease, gastric bypass surgery, cancer diagnosis or autoimmune disease 8. Metabolic derangement such as metabolic acidosis, severe hyperglycemia (fasting blood glucose \>= 200mg/dL), and/or liver enzymes \> three times the upper limit of normal. 9. Any other condition that, in the opinion of the investigators, will increase risk to the subject, or impede the accurate collection of study-related data. 10. Body weight \>= 450lbs 11. Body weight \<=58kg 12. Hemoglobin concentration \<10g/dL

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental
Participant will take Placebo during Period 1 and Prebiotic during Period 2

Group II

Experimental
Participant will take Prebiotic during Period 1 and Placebo during Period 2

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

National Institutes of Health Clinical Center

Bethesda, United StatesOpen National Institutes of Health Clinical Center in Google Maps
CompletedOne Study Center